fix: quick wins (#7, #9, #13)

- Add --version flag and log version on startup (closes #9)
- URL-escape ref query parameter in GetFileContentRef (closes #7)
- Add go vet to release workflow (closes #13)

Renamed local url variable to reqURL to avoid shadowing net/url package.

.gitea/workflows/release.yml

@@ -16,7 +16,9 @@ jobs:
           go-version: '1.26'
 
       - name: Run tests
-        run: go test ./...
+        run: |
+          go vet ./...
+          go test ./...
 
       - name: Build binaries
         run: |

cmd/review-bot/main.go

@@ -18,6 +18,7 @@ import (
 var version = "dev"
 
 func main() {
+	versionFlag := flag.Bool("version", false, "Print version and exit")
 	// CLI flags
 	giteaURL := flag.String("gitea-url", envOrDefault("GITEA_URL", ""), "Gitea instance URL")
 	repo := flag.String("repo", envOrDefault("GITEA_REPO", ""), "Repository (owner/name)")
@@ -36,6 +37,13 @@ func main() {
 
 	flag.Parse()
 
+	if *versionFlag {
+		fmt.Printf("review-bot %s\n", version)
+		os.Exit(0)
+	}
+
+	log.Printf("review-bot %s", version)
+
 	// Validate required fields
 	if *giteaURL == "" || *repo == "" || *prNum == "" || *reviewerToken == "" ||
 		*llmBaseURL == "" || *llmAPIKey == "" || *llmModel == "" {

gitea/client.go

@@ -8,6 +8,7 @@ import (
 	"io"
 	"log"
 	"net/http"
+	"net/url"
 	"strings"
 	"time"
 )
@@ -117,8 +118,8 @@ func (c *Client) GetFileContent(ctx context.Context, owner, repo, filepath strin
 
 // GetFileContentRef fetches a file from a specific ref (branch/tag/sha) in a repo.
 func (c *Client) GetFileContentRef(ctx context.Context, owner, repo, filepath, ref string) (string, error) {
-	url := fmt.Sprintf("%s/api/v1/repos/%s/%s/raw/%s?ref=%s", c.baseURL, owner, repo, filepath, ref)
-	body, err := c.doGet(ctx, url)
+	reqURL := fmt.Sprintf("%s/api/v1/repos/%s/%s/raw/%s?ref=%s", c.baseURL, owner, repo, filepath, url.QueryEscape(ref))
+	body, err := c.doGet(ctx, reqURL)
 	if err != nil {
 		return "", fmt.Errorf("fetch file %s@%s: %w", filepath, ref, err)
 	}